Some preslaughter factors affecting the occurrence ...



Title Some preslaughter factors affecting the occurrence of bruising in sheep
Author(s) M. S. Cockram, R. A. Lee
Journal British Veterinary Journal
Date 1991
Volume 147
Issue 2
Start page 120
End page 125
Abstract The preslaughter handling and behaviour, and subsequent bruising was observed in 40 groups of sheep in a commercial slaughterhouse. A greater percentage of bruised carcasses was found in lambs (71%) than in ewes (49%). A greater percentage of severely bruised carcasses was found in lambs from markets (20%) than in those direct from farms (12%). Significant correlations were found between the occurrence of recent bruising and wool-pulls during unloading, riding by another sheep, and hits and squashes against structures at the slaughterhouse. However, even assuming that each potentially traumatic event observed in the slaughterhouse caused a bruise, only about 25% of the bruising could have been attributed to handling problems at the slaughterhouse. 88% of all bruises were estimated to have been caused within about 24 h of death, indicating that most bruising probably was caused by handling problems during loading on the farm, during transit and particularly at markets.

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